Family of Eight Travels Cross-Country Helping Others

Most families spend their summer vacation at the beach – not traveling across the country to help families in need.

Meet the Mursets.

Gregg, 40, his wife Kami, 37, and their six kids ranging in age from 7 to 16, left Phoenix in their motor home on June 29 to spend 20 days on the road volunteering their time to help 25 families in need.

"I told the kids and my wife over breakfast that I wanted to do this," Gregg Murset, 40, tells PEOPLE.

"They all looked at me like I was crazy," he says, "but when we started to read the stories of people we were going to help, their attitudes completely changed."

Gregg is the founder of My Job Chart, a company with 725,000 users that teaches children about work ethics and money management.

The company partners with Autism Speaks, The Leukemia & Lymphoma Society, and three more organizations that helped to connect the Mursets with families who have children with cancer, genetic disorders and other illnesses.

"When you have a kid who is struggling, the last thing you're thinking of is pulling weeds, vacuuming or dusting," says Gregg.

"It's been amazing to watch my own children open their eyes and see that the world is bigger than they are," he says. "Even the little kids are learning from this experience."

So far, they have stopped in Albuquerque, Denver, Kansas City, Chicago, Detroit and Buffalo on their 6,500-mile journey.

One family in Warren, Michigan, says it was a blessing to have the family stop by their home.

"They showed up at 8 a.m. and we had a list of things we needed help with," says Jim Spencer, 61, whose 12-year-old daughter Lexi has Down syndrome and was diagnosed with leukemia a couple years ago.

"I was very impressed with how professional the kids were," he says. "They just wanted to help."

They were on ladders, cleaning windows and in the yard doing manual labor.

As the Mursets make their way around the country, the kids are visiting places they've never seen.